作者: Huiyun Wen , Ting Gao , Zizhen Fu , Xing Liu , Jiatong xu
DOI: 10.1016/J.CARBPOL.2016.11.022
关键词: Rational design 、 Chitosan 、 On demand 、 Microsphere 、 Swelling 、 Chemical engineering 、 Cell separation 、 Membrane 、 Materials science 、 Bacillus licheniformis 、 Chromatography
摘要: Abstract It is of high interest to obtain hydrogel membranes with optimum mechanical stability, which a prerequisite the successful fabrication microcapsules for cell separation. In this work, we developed magnetic responsive alginate/chitosan (MAC) by co-encapsulation microbial cells and superparamagnetic iron oxide nanoparticles (SPIONs) reacting under voltage electrostatic field. We investigated influence molecular weight chitosan, size, membrane crosslinking time on swelling behavior as an indicator stability membranes. The results demonstrated that suitable conditions were obtained microspheres chitosan presenting 70 kDa 15–30 min resulting in thickness approximately 30 mm. Considering need maintaining inside microcapsules, fermentation at 37 °C neutral pH was favorable. Moreover, MAC sizing between 300 380 μm immobilizing Bacillus licheniformis 286 h multiple fed-bath operation no leakage SPIONs cells. Overall, study provided strategies rational design exhibiting stable